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Panasonic PV-4601 A Service Manual page 203

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UHF/VHF TUNER/TV DEMODULATOR SCHEMATIC DIAGRAM
TO MAIN
P201
VIDEO SIGNAL
PIN-
5
VIDEO
5
PIN-
4
3/4 CH
4
PIN-
3
TV (H)/VCR (L)
3
PIN-
2
UNSW +5V (VIDEO)
2
PIN-
1
AUDIO
1
5
C229
UHF/VHF
UHF/VHF
L202
4
3
2
C202
J201
X201
C203
C212
C217 C222
FL202
R204
Q201
Q202
Q203
4
FL1
L204
L207
1
L209
2
3
R214
R205
C257 C258
R208
R215
C3 R3
4
D1
L5
L10
D5
L16
C24
C1
R2
C2 R1
C5
C6
3
L11
D4
C18
R24
D6
L12
D2
C43
R9
R11
C19
R17
R23
C17
C7
C13
R6
C8
2
R32
C14
L18
C82
R7
R12
R18
R19
C26
C37
D7
C9
C15
C11
C10
D3
L8
C20
L13
C27
R25
C38
D8
C44
Q4
R26
C28
L21
C16
1
L19
L20
R13
L1
L6
C21
R20
A
B
C
(D,E)
AUDIO SIGNAL
R242
C97
C239
C45
R63
L23
14
13
12
11
10
9
8
C243
1
VCC
VHF OSC
VIDEO CLAMP
ANT SW
DRIVER
D9
VIDEO-RF
VHF AMP
IC201
FM
CONVERTER
MODULATOR
AUDIO
AUDIO-RF
SIF OSC
PRE AMP
CONVERTER
R49
1
2
3 4
5
6
7
C241
C230
C231
C240
1
2
3
D11
R234
R235
R46
T202
L24
C242
R221
R236
R238
R41
Q6
L28
C252
C33
C58
C55
R44
C34
C59
R40
R47
C50
C4
R27 C32
C49
R30
R28
R29
C35
R31
D15
C36
C88
C60
C95
TP3
R45
R53
R50
R55
C68
C46
C51
C66
D18
C75
D17
C91
C62
C67
L29
R98
C47
C52 R99
L25
L30
R59
D19
D22
D21
D12
C87
R54
C69
R56
D
E
F
G
FL701
SAW FILTER
TP5
EFCKM3561M
1
2
3
4
C61
L701
0.01
T1
4
3
R48
L26
D16
L31
BURST
SIF
R702
T701
2
LEVEL
4700
VLTS0239
6
1
3
4
D13
C71
R52
2
C63
1
6
C57
C12
C80
C99
C90
C93
L27
C65
18
17
16
15
14
13
12
11
10
BU
VHF
UHF
IF
MIX
MIX
AMP
IC1
LOCAL
VHF
UHF
AMP
OSC
OSC
C83
VCC
1
2
3 4
8
9
5
6
7
R51
C72
C79
C73
C98
C94
C81
C96
R58
R70
C74
R60
C92
C102
C78
D20
C76
R61
H
I
J
NOTE:
FOR SCHEMATIC AND C.B.A. DIAGRAM NOTES, REFER
TP701
TP702
TO BEGINNING OF SCHEMATIC SECTION (SECTION III)
FL702
C704
C707
C712
5
VLFS0212
4700P
2200P
0.1
C722
C710
0.01
0.01
C702
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
68P
VCC
GND
GND
FM
AUDIO
IF
VCC
RF
IF
LIMITER
VIF AMP
DETECTOR
AGC
AMP
AGC
AGC
VOLUME
AUDIO
VIDEO
IC701
CONTROL
DETECTOR
DETECTOR
AN5180NK
VIDEO
TV
AMP
DEMODULATOR
NOISE
VIDEO
INVERTER
AMP
AFT
VCO
APC
GND
VCC
1
2 3 4
14
15
5
6 7
8
9 10 11
12
13
C701
100P
C703
R703 L702
R706
C714
82P
27P
220
15
3900
T703
VLTS0238
3
4
TP704
T702
TP705
VLTS0237
2
TP703
AFT
FL703
4
3
TP707
TANK
1
6
VLFS0200
R704
2
R705
R713
150
VCO
1200
6
1
C705
R707
R701
1K
C721
1
2700
C715
R708
R709
0.01
5600
68K
0.22
C7625
Q7601
R7610
FREQUENCY
C7618
IC7601
SYNTHESIZER
C7604
C7627
1
GND
22
TUN
R7603 R7602
2
PD
TUNER SIGNAL (L)
21
R7601
C7605
3
VIDEO
20
B3
CH FREQUENCY
4
B2
19
LOCK (L)
UNSW +5V
BU
5
18
(SYS.CTL)
6
B1
OSC 1
17
C7601
C7602
C7603
R97
C7626
C7628
4.5MHz
R96
C7606
7
SW +12V
OSC 2
16
C7607
8
RF
GND
15
R7608
C7608
9
GND
SERIAL CLOCK
14
REF
10
SERIAL DATA 0
13
C7609
11
DTS CS (H)
12
GND
K
L
M
IMPORTANT NOTICE:
1
IF PARTS OF TUNER AND FS SECTION ARE
REPLACED INDIVIDUALLY. THE FCC SPECIFICATIONS
WILL NOT BE SATISFIED.
DURING SERVICING. PLEASE REPLACE AS A UNIT.
R714
R710
C711
C720
5600
12K
4.7/25V
0.01
2
SINCE THE UHF/VHF TUNER/TV DEMODULATOR UNIT
HAS ALREADY BEEN PRE-ADJUSTED AT THE FACTORY,
TP706
DO NOT TRY TO ADJUST THE UHF/VHF TUNER/TV DEMODULATOR UNIT.
THE UHF/VHF TUNER/TV DEMODULATOR UNIT REPLACEMENT PART
IS AVAILABLE ONLY AS A COMPLETE ASSEMBLY UNIT.
C713
0.47
P701
TO MAIN
14
AFC
PIN-
14
C723
15
SW +12V
PIN-
15
1000P
16
AUDIO
PIN-
16
17
VIDEO
PIN-
17
18
UNSW +5V (SYS.CTL)
PIN-
18
19
GND
PIN-
19
C706
R715
R719
0.01
1800
330
R716
5KB
C708
C716
RF
0.01
0.47
R717
AGC
4700
Q701
2SD601
(BUFFER)
270
R712
R711
1K
68K
R718
R720
270
470
C7611
C7615
C7624
C7616
C7612
R7604
TO TV MAIN
P7601
6
+30V
PIN-
6
7
SW +12V
PIN-
7
R7605
8
SERIAL CLOCK
PIN-
8
C7619
9
TUNER SIGNAL (L)
PIN-
9
10
10
CH FREQUENCY LOCK (L)
PIN-
C7610
X7601
C7613
C7620
11
SERIAL DATA 0
PIN-
11
12
UNSW +5V (SYS.CTL)
PIN-
12
PIN-
13
13
DTS CS (H)
C7622
R7606
C7617
UNLESS OTHERWISE SPECIFIED:
R7609
WATTAGE OF RESISTORS ARE 1/8W AND 1/16W.
R7607
C7623 C7621
VJBS07614
N
O
P
Q

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